Typographic composing-machine.



' F. H.'PIERPONT. TYPOGRAPHIG GOMPOSING MACHINE i n APPLIoATIoN FILED JUNE?, 1912.

1,079,361, Patented Nov. 25, 1913.

7 SHEETS-SHEET 1.

EJE] @El El@ El@ @El #MW @mu iE'. H. PIERPONT. TYPOGRAPHIG ooMPosING MACHINE.' AP PLIOATION FILED JUNE 3, 1912.

1,079,361 l Patented Nov. 25, 1913.

7 SHEETS-SHEET 2.

. Y@ OO P. H. PIERPONT. TYPOGRAPHIG GoMPosING MACHINE. APPLICATION FILED JUNE 3, 1912.

Patented Nov. 25, 1913.

7 SHEETS-SHEET 3.

I F. H.y PIBRPONT. TYPGGRAPHIG COMPOSING MACHINE. APPLIGATION FILEDA JUNE a. 1912. 1,079,361 Patented Nov.'25, 1913.

7 SHEETS-SHEET 4.

I* 63 o z 3 HZ z 5 5 Eg 64 b2 E6-E4 F. H. PIERPONT. TYPOGRAPHIG GOMPOSING MACHINE. APPLIoATIoN FILED JUNE s, 1912.

1,079,361 Patented Nov. 25, 1913.

7 SHEETS-SHEET 5.

P. H. PIERPONT. TYPOGRAPHIG COMPOSING MACHINE. APPLICATION FILED JUNE 3. 1912.

1,079,361 l Y Patented Nov. 25, 1913.

P. H. PIERPGNT. IYPOGRAPHIC COMPOSING MACHINE. APPLICATION FILED JUNE 3, 1912.

Patented Nov.v 25, 1913- 7 SHEETST-SHEET 7.

UNITED sTATEs PATENT oEEicE- FRANK HINMAN PIERPONTOF HORLEY, ENGLAND, ASSIGNOR T0 LANSTON MONO- TYPE MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION 0F VIRGINIA.

TYPOGRAPI-IIC C OMPOSING-MACIIINE.

Specification of Letters Patent.

PatentedN0v-25, 191.3.

Application iled .T une 3, 1912. Serial No. 701,323.

To all ohom it may concern:

Be it known that I, FRANK HINMAN PIER- roNT, a citizen of the United States, residing at Horley, in the county of Surrey, vEngland, have invented a certain new and useful Improvementin Typographic Composing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings and to the figures and letters of reference marked thereon.

This invention relates to key-operated or manually controlled typographie composing machines of the kind for producing or composing a pattern, record strip or other governing element of an automatically controlled composing or type-casting and composing machine.

The chief object of the invention is to expedite or simplify the composition of tabulated matter on such machines.

In these machines, examples of which are to be found in the specifications of British Letters Patent Nos. 18,638/99, 15545/06 and 17199/08 (U. S.,Patents No. 654,115 of July 17, 1900; No. 828,449 of August 14, 1906 and No. 944,405 of Dec. Q8, 1909) composition is effected by the manipulation of keys representing characters, spaces and justification fractions, and adapted, through permutation or equivalent mechanism, to actuate punches or other signal producing' devices operating to compose or produce the pattern or record-strip.

In order that the composed lilies may be produced justified, these machines are provided with measuring and indicating mechanism for designating the justification signals required to be added to the pat-tern for a particular line of composition in order that the line of typographie matter may be produced justified in the automatic machine. This measuring mechanism comprises a measuring member advanced step by step a certain distance corresponding to the unit value of the signal denoted by the successive keys as operated, a second measuring element advanced, on the operation cf a special key, to meet the first measuring element and thereby effect the setting of a justification chart or indicator operatively connected with and positioned by the second measuring element.

The compositor operates the keys, which produce signals denoting type, both with respect to character and dimension, until the composition approaches the end of a line, which approach is notified usually by an audible signal, then if the line is not exactly filled and all the mat-ter that be included properly has been'included, the compositor, by operating one special key to effect the setting of the 4justification devices, can observe from the indicator, the justification required and thereafter strike the appropriate key or keys to produce the required signal or signals for the line. After this, he operates a re-setting key by which power is withdrawn from the motor driving the line measuring element and power admitted to a reversing motor for re-setting the line measuring element.

The justification indicating mechanism, which in `some lform is common to all such composing machines, is operative, properly speaking, only near the end of a line, and within a predetermined area known as the justification'area, the entrance of the composition into which is notified by the sounding of a bell or by some other signal, and aft-er justification has been performed the .measuring mechanism -is returned or reset,

for the commencement of the' composition of a fresh line, by the operation of a re-setting mechanism controlled generally by a key. The extent of the return lmovement is determined by a fixed zero stop previously set to the commencing'v point for a full measure of straight composition.4 'This mechanism therefore answers, exceedingly well, all the requirements of composition of straight forward matter, but when itis required to compose tabular matter wherein a full measure or complete line is comprised of two or more sections each existing as a separate entity so far as justification is concerned, then the compositor has t-o rely on artificial methods and artifices for obtaining the justification of each section. These methods, which are rendered possible by the skill andknowledge of the compositor, increase the possibility of error and interrupt the attention of the .operator to his composition.

According to the ypresent invention, a

variable stop mechanism is provided whereby justification of the various sections in a complete line can be effected with the same facility and rapidity as with a line of full measure, hitherto..

The invention is particularly applicable to the method of composing tabular matter on these machines, wherein .in order to obtain the assistance of the j ustiication devices for each section, composition of each of the sections is` made to finish within .the existing justification area. In order to render this possible hitherto the zerov stop has been set for the commencing point of the. largest section or minor line in the full line and, for composing the other sections, when the re'- setting key has been operated, the return movement of the measuring element has been controlled by hand or otherwise mampulate-d to proper position. This method necessitates the compositor remembering which section he is about to commence, subtract-ing the units comprised in that section from those of the largest section (for which the zero stop remains set) and setting the measuring element accordingly. With the present invention all this is avoided. This mechanism comprises a series of adjustable zero stops for the measuring element, the members of which are automatically and separately f interposed in, and withdrawn rom, the return path of the measuring element to form the zero stop or, in other words, establish datum lines, for the commencement of the successive sect-ions of the line. v The stops according to this invention are adjustably carried upon a rotary shaft or member, and are set or adjusted by or in consequence of the initiation of the return or resetting movement of the measuring mechanism controlledv preferably by the actuationof the re-setting key.A Automatic mechanism which is adjustable, is provided for returning or allowing the shaft to return to zero position after the stops of the series have been in operation, under the infiuence of a motor, preferably a spring. for the commencement of a new line. Conveniently the mechanism is so contrived as to eifect the movement or adjustment of the stop in advance of the return of the measuring element.

Referring to the accompanying drawings wherein the invention is shown applied to a composing machine of known construction Figure 1 is a front elevation partly in section of mechanism embodying the invention as shown in position on a composing machine of known construction. Fig. 2 is a plan of Fig.v1. Fig. 3 is an end elevation of Fig. 1. Fig. 4 is a sectionalend elevation of Fig. l showing the parts at a different point in the cycle of operations from Fig. 3. Figs. 5 and 6 are also sectional Vend elevations of the mechanism. Fig. 7 is a sectional end elevation on 'the line 7*?, of Fig. 1. Fig. 8 isI a section on the line 8* 8, of Fig. 2, and Fig. 9 is another end sectional eleva tion.

The same reference characters denote the same parts throughout the drawings.

' A AA2 arethe stops.

B is the rotatable shaft carrying the stops.

C is thespring motor by which the shaft is returned to initial position.

D is the mechanism for advancing the shatt to -interchange the lstops, and E is the controller or. mechanism for controlling the return ofthe shaft to initial posit-ion.

The stops A of which there may be any appropriate number, are v-adjustable both longitudinally and circumferentially of the shaft B, which la-tter is advanced at each operation of the special key, to interpose the stop for the next section to be composed and withdraw the one previously in use until all lthe stops required have been used. .The shaft is then returned to initial position thro-ugh an adjustable controller E. which renders the forward driving mechanism inoperative, releases a holding device ,and allows the return motor C to return the shaft B.

The shaft 'B is furnished or cut with a series of annulargrooves B at equal distances apart, conveniently `18 units and the stops A A A2, which' are formedwith an opening conveniently oval in form embracing the shaft, are each provided with a key or eccentric rib a to fit into one of the grooves. In the shaft B are also cut a series, conveniently twelve, of longitudinal grooves or slots B2 into lone or other of which an adjustable key a with which each stop is furnished, can t, thus permitting each of the various-stops being set to any one of twelve possible circumferential positions.

a2 is a lock-screw which holds the stop in adjusted position (see Fig. 7) and by releasing which a stopcan be moved transversely of the shaft and thus adjusted both circumferentially and longitudinally of the shaft, a quick adjustment being thus provided. .To assist in effecting accurate adjustment each stop is preferably furnished with' an abutment screw as to gage the position ofthe line measuring devices when engaged therewith as hereinafter explained.

The shaft is rotated step-by-step toefect the interchange of the stops by mechanism controlled by the line measuring mechanism re-setting key. As the machine to which the invention is shown applied is a pneumatically operated one, the line-measuring mechanism is pneumaticallylcontrolled and the movement of the shaft B is controlled by a pneumatic motor.r Conweniently there is mounted on one end of the shaft B a ratchet wheel Ba with which engages, under the in` fluence of aspring d, the pawl D carried by a. lever D `which has its pawl-carrying end resting upon a piston rod D2 working in a cylinder D3.

D4 isa holding pawl for preventing the shaft being'. displaced when the driving pa'Wl Q U is performing its return stroke'. On the operation of the special or return key atth'e end 'of the composition of a section, pressure isadmitted to the cylinder D3 to raise the vpiston rod D2 tov lift the lever D and at each-upward movement the lever D and' pawl D turn the' Wheel and shaft B through ing the stops in the path of the line-measuringfelement. The piston D2 of the cylinder D3 on reaching' the upper end of its Stroke, uncovers a port d through which air now passes by a conduit Z2 to the cylinder H of :t reversing motor for -re-setting the linemea'suring element. This arrangement insures that the proper stop is in position before the line-measuring element is returned.

The -stops areset longitudinally of the shaft tocorrespond with the length of the various sections of the Iinel to be composed. .They are alsov set circumferentially' of the shaft so that as the latter is rotated at each operation, the distance of a tooth a fresh stop will be interposed. In the present example there are twelve teeth von the ratchet wheel so that twelve stops can be accom urodated and twelve sections composed. If

`the full number of stops is used, then the shaft will perform a complete revolution and at the end of one series of operations be in position to commence a second series. If, however, as in the example illustrated, only three stops are needed, then it is necessary to provide for the return movement of the shaft to zero or initial position after the last stop has acted. For this purpose the driving mechanism for the shaft is automatically disconnected and the shaft permitted to return to zero or initial position under the influence of the motor C the spring of which has been Wound up by the forward 'rotation of the shaft B.

The reversing movement of the shaft is governed by the controller E which is adjustably secured to the shaft B through a clutch piece E. The piece E llhas .teeth e engaging similar' teeth on the end of the shaft B and is held in place by a screw' cap e; it can be adjusted circumfere tially `of the shaft to correspond with any df the possible positions of one of the sto-ps.' For the work in hand, this controller E is set to a position corresponding with the last stop to be used, so that` with the presentation of this last stop in the path of the measuring element. the controller E strikes a pin E2 carried by a lever E3 mounted loosely on the shaft B or on a support concentric therewith. and shifts the said block from the position shown in` F ig. 4to that shown in Fig. 3. The lever E is furnished with two notches E* E5 with one or other of which a spring pin E" engages to hold the lever in* either of its adjusted positionsl tion indicator rack The effect of the controller E striking the 'f pin and moving the liever' E3 is to cause a pin E7 on the lever to engage the drivin-g .paW'l' D as the latter is retracted' and lift it' out of engagement with the ratchet Wheel iB? (as shown-in Fig. 6): the tail of the'k pawl D depresses stem E8 of a valve E9 (see Fig'. 6") to shut ofi? the the distance of one tooth, thus interchang- In thus moving conduit e2 leading from the air supply conduit e3 to the cylinder of piston'- D2 and direct the air from the supply conduit to a v conduit c* leading to a cylinder El". On

`the next operation, therefore, of the special or re-setting key the air in place of entering the cylinder of piston D2 to advancel thedriving pawl, lentersvcylinder El driving out -the piston and lifting this pawl against the action ofthe spring 0:6 out of gear with the ratchet Wheel B3 as shown in Fig. 6'. The disengagement with the ratchet Wheels of pawls D and D4 allows the springmotor C torotate the shaft B in the reverse direct-ion. Through this rotation the controller' E now comes into contact with the left hand side of pin E2-and shifts lever E8 hack to the initial rposition shown in Figs. 4 and 5, Where it is retained by the spring E, .and to prevent the lever overrunning this vstop it is provided with a pin E12 E against the tail of' Ithe holding paWl D4 Which strikes an abutment E23. The spring a returns the holding pawl into engagement with the ratchet Wheel and a spring pin E14 returns the lever D to its initial position.

The composing machine to which the invention is shown applied is that forming' the subject matter of British Letters PatentfNo. 17199/08 (U. S. No. 944,405) to the specification of which attention is directed for a detailed description. It is not considered necessary here to describe thiscomposing machine in detail, it will be sutiicient to refer to the parts more intimately concerned with the present invention.

F is the motor rack of the line measuring mechanism, G the motor cylinder, H the inotor return cylinder, I the units wheelV which is driven from the rack F by a pinion z' gearing with the teeth of 4the rack; J the justification indicator drum; K t-he justificawhich gears with a pinion k2 on a vertical shaft` lo* which carries a quadrant k3 gearingvwith a pinion]I on the' spindle of the drum, the racks K and 'F cooperate for positioning the indicator drum. L the justification indicator drum motor, M the units rack, N the units Wheel holding pawl, O thev stop bars, P-the linescale rack which. is driven from the motor rack through the shaft of the units wheel by a pinion i', Q the justification pointer, R the resetting motor, S the line scale 'rack and T the bell operating lever. T he stops A A A2 While acting upon the motor rack F or v lmemeasuring element'do not directly engage Stop A* on the When the lmechanism forming'the subject this member but engage the line scale rack P, which, as stated above, isv geared 'to thel rack F. Although all the stops A AgA2 may be carried on the shaft B the initial for the line is conveniently carried machine frame so that it can be used matter of the present invention is not in use.

The parts above referred to ldo not differ materially from. those of the machine of the earlier patent except that the line scale S is placed to the right hand side ofthe machine inv place of being in the center thereof and the pointer P on the line'scale rack is carried on one-end thereof in place of being at or about its center.-

Having thus vdescribedmy invention, what I claim as new is: l

l. In a line measuring and justification mechanism for a ke operated or manually controlled typograp ic composing machine the combination with a series of adjustable zero stops for the line-measuring mechanism and mechanism controlled by the initiation of the return movement of the measuring mechanism for effecting the successive adjustments ofthe stops, of an adjustable controller and a motor-for effecting the return movement/ofthestops to initial position, substantially as described. 2. In a line measuring and justification mechanism for a key operated or manuallycont-rolled typographie composing machine the combination with a series of adjustable zerostops for the line-measuring mechanism, of mechanism controlled by a key for effecting the successive adjustments ofthe stops and for e'ectin-g their return-to initial position, substantially as described.

In a eline. measuring and justification mechanism for a key-operated or manually controlled typographie composing machine, the combination with aser-ies of adjustable zero-stops for the line-measuring mechanism, of a key-controlled actuating air-motor for effecting the successiveinterchange of the stops and a conduit controlled by the piston of the motor and leading from this motor to the reversing motori of the linemeusnring mechanism, substantially as and for the purpose described.

` 4. In a line measuring mechanism for a key operated' or manually-controlled typographic composing machine, the combination vwith a. series of adjustable zero-stops mounted upon a rotatable shaft which is actuated by a motor drivenpawl, of a con- A troller adjustably connected tothe shaft by a clutch member and arranged to operate a lever to disengage'or effect the disengagement and rengaofement of the shaft-driving substantially as 5. In a line measuring andv justification mechanism for a' key-operated or manually lcontrolled typographie composing machine,

the combination with a series of adjustable zero stops carried upon a rotatable shaft provided Wit-h pavvl and' ratchet mechanism B3 controlled by a motor D2 D3, and a reversing motor C, of an adjustable controller E adapted to control the movement in both directions. of a lever which directly controls the disengagement of the drivin pawl D and opens a valve to effect throng a motor E10 E11 the disengagement of a holding pawl D*, substantially as described.

6.In a composing machine such as described, provided With a line measuring mechanism including a movable member for registering the sum of space values of succeeding signals and in combination. therewith a revoluble shaft provided with longitudinal and circumferential series of sp-acing members, a stop provided with means for interlocking with bot-h series of spacing members and means for revolving the shaft to present the sto-p in the path of said movable member.

7. Ina composing machine such as described and in combination with the line measuring mechanism-thereof, a revoluble shaft provided with a series of annular groo-ves and circumferential spacing members, a' plurality of stops each provided with interlocking .means for engaging said groove and spacing members to position said stops longitudinally and circnmferentially of the shaft, and means for rotating the shaft to bring the stops successively within the range of action of the line measuring mechanism.

8. In a composing machine such as described and in combination with the line measuring member thereof, a revoluble shaft provided with a longitudinal series of annulail grooves and circumferential recesses; a stop member provided with an elongated opening for the reception of said shaft;

opposed interlocking members carried by said'stop member, the one adapted to engage the annular grooves and the other the circumferential recesses, and means for rotating the shaft.

' 9. [n a, composing machine such as described, provided with a line measuring member and in combination therewith, a revoluble shaft furnished with a longitudinal series of spaced annular grooves, each provided with a circumferential series of Aspaced recesses; a plurality of stop members encircling said shaft, each provided. withan elongated opening for the shaft, interlocking;r members for said grooves and recesses, und an adjustable abutment for the line measur ing member; and means for rotating said shaft to bring the abutments successively into the path of movement of said line measuring member.

10. In a composing machine provided with -a movable line measuring member, and

in combination therewith, Ya variable -zero positioning or Vstop mechanism for establishing `datum lines for successive excursions of the line measuring member, ythe same including a reciprocatory member equipped with a plurality of ,sto'ps serially arranged' and adapted for successive .interpositionin the path o f the line measuring member; actuating devices for said reciprocatory member including `a driving pawl, an actuating piston therefor, a holding pawl and an actuating piston therefor and a return motor; a contro-liable pressure supply comm\ 1nic'at ing` with said pistons; a valve mechanism intermediate said pressure lsupply and pistons l.for alternately openlng the line 'of communi-v cation to one and closing that to the other piston; and means for couplingsaid valve with the driving p'awlin a manner to admit pressnre to the o ding pawl lpiston 'and cut-- oif pressure on the driving pawl actuating piston u'pon the `ivvithd'r'awal or nncoupling of said driving p'awl, to `effect the withd ravval. fthe holding pawl and permit the. return o the line measuring member.

11. In a composing machine provided with a line measuring Imecharlisrnincluding Aa line measuring member and 'motor return mechanism therefor, and iny combination therewith the fo1lowing elements, to wit; a

variable stopmechanism comprising a rev-v supply and driving pawl actuating'piston,

12. A variable 'stop' mechanism for the line measuring member of a composing machine such as described, the sameinclnding in combination, the following elements, to wit; a reciprpcato'ry member provided with agp'luralit'y, of serially disposedt stops; 'actuating devices v for said reciprocatory mem-- ber including an intermitting ydriving membe'r with" an actuating piston therefon, a holding member ywith a retracting piston therefor, 'and a return motor 'device-5a pressure supply with branches communicating with the pistons of said driving and holding members; and a valve mecha'nsrn controlling saidv branch 'lines of cormnunic'ation to alternately open one and close the 0th r.

13. A variable stop mechanism foi-tl` line measuring-mechanism ora 'composing machine, -such as described, the 'sameincluding in combination, the following elements, to wit; a vmovable member provided with 'a plurality of stops serially disposed for successive presentation to the line measuring mechanism; actuating devices for said movablemember including piston operated impellng means, piston released holding means and 4a return `'motor a pressure suplldconduit connected with the 'pistons of sai valve controlling the lines of communication between said pistons-and `si'ipplyconduit. the Vsanne being arranged to normally close commnnica'tion with the piston of the holding means =and open communication with the piston of the impelling means, and, when shifted, to cut out the pistonof the impelling means and open that of the holding means, whereby when thevalve is in one position, the admission of pressure in the supply conduit will actuate the impelling vmeans to advanceI the movable stop member and when in another position the pressure will be 'applied to the holding -rneans to re-4 lease and permittheretnrn of the stop-member.

,14.l In a variable stop mechanism for the linemeasurmg mechanism o f compo'smg machmes, such as described, 'the combin'aho'n `ohfthe following elements, lto wit; a movable stop member equipped with a plurality of stops serially arranged for Asucces,sive presentation to the line measuring mechanism; actuating means for said stop member including a return motor, piston driven ac tilating devices including a driving pawl and piston Aretracted holding devices; a

pressure supply in open -communicati on with the piston of the actuating devices; and a valve acted upon by the driving pawl when retracted and operating toclosecomf munication between the pressure supply and piston of the actuating devices andI op'nI communication .between thel pressure supp, y and the piston of the holding devices, to eii'ect the release of the latter and the return of the movable sto'p member.

15. vIn a composing machine and in 60mbinationwith thev'line measuring mechanismv thereof, a variable stop mechanism including the followmg elements, to wit; a movimpelling and holding means; and a soY ablemember provided with a plurality. oi

stops serially arranged for successive presentation to the l1ne',measur1ng mechanism;

actu-ating devices for'intermittingly vancin'o said movable member and for retracting the same including a return lmotor; a pis-4 ton driven pawl; a holding pawl and a retracting piston for the latter; apressure Asupply normally in open communication with piston ofthe driving' pawl; a valve operated by the piston driven .pawl 'when withdrawnfrom its complemental driving member for closing communication with the driving pawl piston and opening communication with the holding pawl piston; and a controller for the driving pawl coupled with the movable member and acting upon the driving pawl to retract the latter and shift the valve.

16. Ina variable stop mechanism for the line measuring devices of composing machines, the combination of the following elements, to wit; a reciprocatory member equipped with a plurality of stops serially arranged for successive presentation; actuating devices for said reciprocatory stop member including motor' operated devices for intermittingly advancing said member, a retaining member, and a'returning motor opposing the intermitting advancing means; a motor for effecting the release of said retainingr member; a pressure supply normally closed to said last named motor and open to the motor of the intermitting advancing devices for the stop member; a valve mechanism for reversing the connections between the pressure supply and the release and advancing motors ,to'cut out the latter and energize the former; and means for actuating said valve, the same including a controller, mea-ns operated lthereby for disconnecting the devices for intermittingly advancing the movable stop member from the latter; 4and for shifting said valve, and an engaging member coupled with the rel ciprocatory stop member and'acting upon said controller at a predetermined point in the forward traverse of said stop member.

17. rIn a variable stop mechanism for the line measuring mechanism of composing machines the combination `of the following elements, to wit; a movable stop member equipped with a plurality of stops serially arranged for successive presentation; an actuating mechanism for said stop member including releasable driving and retaining devices and a return motor; a pressure supply with means forJ alternately connecting the same to said drlving and retaining devices, to actuate the one or ,-release the other; and a controller for said pressure supply shifting means adj ustably coupled with the movable stop member and actuated thereby to release the driving and retaining devices of the actuating mechanism and permit the return of said movable stop member by its motor.

18. In a variable stop mechanism for the line measuring mechanism of composing machines,the combination of the following elements, to wit; a movable stop member provided with a plurality of stops serially disposed for successiveipresentation; actuating devices for said stop member including revided with a plurality of stops serially ar` ranged for successive presentation; actuating devices including a driving pawl with impelling piston, a holding pawl with releasing piston and a return motor; a controllable pressure supply communicating with the piston of the driving pawl; a valve normally closing communication between the piston of the holding pawl and the ressure supply and capable, when shifte of opening said line of communication and closing that leading to the piston of the driv- -mg pawl; and means connected with the driving pawl for shifting said valve when said pawl is moved to uncouple the stop member.

20. In a variable stop mechanism for line measuring devices, the combination of the following elements, to wit; a movable stop member; actuating devices including a pawl and ratchet driver and a holding pawl; a controller co-upled with the movable stop member and provided with a shoulder in position to engage and lift the driving pawl when said controller is moved from its nor mal position; and means coupled with the movable stop member and acting upon the controller to shift the latter at a predetermined point in the advance of said stop member.

21. In a variable stop mechanism for line measuring devices provided with a movable stop member and actuating devices therefor, including a reciprocatory driving pawl, and in combination therewith means controlled by the stop member for limiting the advance of the latter.

22. In a variable stop mechanism for line measuring devices equipped with a movable stop member and intermittent feed actuating devices therefor and in combination therewith means controlled by the stop member for Yauomatically suspendin the action of the feed actuating devices an means also controlled by said stop member for effecting the return of the latter to initial or zero position.

FRANK HINMAN PIERPONT. Witnesses:

R. WEsTACorr,

H. D. JAMESON. 

